Reference Intervals of Thyroid Function Tests Assessed by Immunoassay and Mass Spectrometry in Healthy Pregnant Women Living in Catalonia.
José María HernándezBerta SoldevilaInés VelascoFernando Moreno-FloresLaura FerrerAlejandra Perez-Montes de OcaCecilia SantillánCarla MuñozSílvia BallestaCristina CanalManel Puig-DomingoMaría Luisa GranadaPublished in: Journal of clinical medicine (2021)
We established trimester-specific RIs for TSH and for FT4 with immunoassays in our population. We also validated the 1T FT4 using LC/MS/MS to confirm the results of FT4 lower than the 2.5th percentile or higher than the 97.5th percentile.